Gazebo unable to import models

I'm a noob in ROS and Gazebo so please go easy on me.
I recently installed ROS kinetic and i'm facing this issue with gazebo. when i type gazebo --verbose i keep getting errors and warnings as shown in the below picture

You might have some default proxy setting for the terminal. Open the network settings from Settings and apply same proxy setting system wide. If you do not use any proxy then select None and apply system wide. Please restart before using further